<?php
setcookie("vote", "k100", time() + 3600, "", "", "", 0);
session_start();
$lifeTime = 24 * 3600;
$_SESSION['pwd'] = md5(time());
setcookie(session_name(), session_id(), time() + $lifeTime, "/");
echo "<a href=new.php>new1</a></br>";
$a=session_name();
$b=session_id();
echo "<a href=new.php?$a=".$b.">new2</a>";
?>
<html><head></head>
    <body>
        <script>
            function cookie(name, value, options){
                if (typeof value != 'undefined') {
                    options = options || {};
                    if (value === null) {
                        value = '';
                        options.expires = -1;
                    }
                    var expires = '';
                    if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
                        var date;
                        if (typeof options.expires == 'number') {
                            date = new Date();
                            date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
                        } else {
                            date = options.expires;
                        }
                        expires = '; expires=' + date.toUTCString();
                    }
                    var path = options.path ? '; path=' + (options.path) : '';
                    var domain = options.domain ? '; domain=' + (options.domain) : '';
                    var secure = options.secure ? '; secure' : '';
                    document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
                } else {
                    var cookieValue = null;
                    if (document.cookie && document.cookie != '') {
                        var cookies = document.cookie.split(';');
                        for (var i = 0; i < cookies.length; i++) {
                            var cookie = (cookies[i]).replace( /^\s+|\s+$/g, "" );
                            if (cookie.substring(0, name.length + 1) == (name + '=')) {
                                cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                                break;
                            }
                        }
                    }
                    return cookieValue;
                }
            }
            cookie("name","baicai");
        </script>
    </body>
</html>